Injection Molding
4 조회수
PPS Flash and Overflow
문제 현상
Severe flash at the parting line and ejector pins of PPS products, requiring cleaning almost every shot.
원인 분석
PPS melt has excellent fluidity (low viscosity) and easily penetrates tiny mold gaps; insufficient parting line fit accuracy, insufficient clamping force or excessive injection pressure all form flash.
해결 방법
①Control parting line fit accuracy within 0.01mm; ②check and increase clamping force; ③reduce injection pressure and speed; ④repair worn parting lines and inserts.
핵심 요약
Flash is the number one problem in PPS processing; its low-viscosity characteristic requires mold fit accuracy far higher than conventional engineering plastics.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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